Lexmark X644E Service Manual - Page 53

7002-xxx Service error codes (9xx.xx) (continued) Error code Sub codes Display text Description Action 920 .01 920 .02 920 .03 920 .04 920 .06 920. .07 Hot roll took too long to heat up after transitioning to new enhanced mode (standby control only. Fuser page count between 0 and 99,999. Hot roll fell too far below the desired temperature while in standby. Fuser page between 0 and 99,999. Hot roll too cool when checking for slope change in standby. Fuser page count between 0 and 99,999. Hot roll too cool when heating to desired temperature after slope change (standby control only). Fuser page count between 0 and 99,999. Fuser is not increasing in temperature even though the lamp has been on for an extended time. Fuser page count between 0 and 99,999. Fuser has been below the desired temperature for too long while media is in the nip. Fuser page count between 0 and 99,999. • Bad thermistor, circuit or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. • Low wattage or incorrect lamp. • Incorrect hot roll. Go to "920.xx-Cold fuser service check" on page 2-132. • Bad thermistor, circuit or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. • Low wattage or incorrect lamp. • Incorrect hot roll. Go to "920.xx-Cold fuser service check" on page 2-132. • Bad thermistor, circuit or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. • Low wattage or incorrect lamp. • Incorrect hot roll. Go to "920.xx-Cold fuser service check" on page 2-132. • Bad thermistor, circuit or cabling. • Fuser not receiving sufficient AC power. • Poor supply line voltage. • Low wattage or incorrect lamp. • Incorrect hot roll. Go to "920.xx-Cold fuser service check" on page 2-132. • Fuser is not receiving AC power. Go to "920.xx-Cold fuser service • Poor supply line voltage. check" on page 2-132. • Bad thermistor, circuit, or cabling. • Very noisy thermistor signal. • Fuser not receiving AC power. • Poor supply line voltage. • Excessive load on the fuser. • Low voltage or incorrect lamp. • Abrupt change in temperature that has disrupted control. • Incorrect hot roll. Go to "920.xx-Cold fuser service check" on page 2-132. Diagnostic information 2-15